Comparison

Zen Fast vs Intermittent Fasting Kit

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Zen Fast

Easily track your fasting periods with this straightforward application. It offers notifications, historical data visualization, and a clean interface. All data is stored locally for privacy.

Highlights
  • Fasting notifications
  • Graphs and history
  • Simple user interface
  • Offline functionality
  • No sign-in required
Read full description

This is a simple app to help keeping track of your fasts! Highlights: * Notifications * Graphs/History * Simple design * Offline (no data is uploaded, no need to sign in) and more!

About

Intermittent Fasting Kit

This app simplifies time-restricted eating with a calm, beautifully designed interface. It allows users to start and track various fasting windows with gentle notifications and progress rings, focusing on sustainability rather than obsession.

Highlights
  • Multiple fasting methods (16:8, OMAD, 5:2, custom)
  • Live progress ring widgets (Home, Lock, StandBy)
  • Live Activity and Dynamic Island countdown
  • Apple Watch complications and controls
  • Fasting history with streaks and milestones
  • Stage indicator (ketosis, autophagy)
  • Weight tracking via Apple Health
  • Water logging
Features
Read full description

Fasting made simple, not a second job. If you have downloaded a fasting tracker only to find it nagging you with pop-ups, pushing premium meal plans, and treating every missed window as a moral failure, Intermittent Fasting Kit is the calm alternative. It is built for people who want the benefits of time-restricted eating without the obsession — a quiet fasting timer that runs the clock, then steps out of your way. The philosophy is simple: a fasting app should give you the science and the schedule, and let you live your life around it. It is designed for adults running 16:8 around busy weekdays, the long 20:4 or OMAD on slower ones, 5:2 around a night-shift rota, or 14:10 as a gentle entry into intermittent fasting and weight loss. Every feature described below is unlocked only with an auto-renewable subscription purchased inside the app. New users receive a 3 day free trial; you may cancel anytime during the trial to avoid being charged. Open the app and start a fasting window with one tap. A clean progress ring shows where you are in the fast, while a stage indicator marks the shifts from glycogen depletion into ketosis, autophagy and growth hormone release, so the eating window stops being abstract and starts feeling like a guided fasting clock. Gentle notifications open and close the window at the right time, the Live Activity keeps the countdown alive in the Dynamic Island and on the Lock Screen, and Apple Watch complications let you check in from your wrist without unlocking the phone. Weight tracking syncs with Apple Health, water intake sits alongside the fast, and streaks and milestones live in your history without punishing the days you broke a window early. Custom fasting protocols stretch beyond the presets, so a 24-hour reset, a one-meal-a-day rhythm or a personal 17:7 schedule fit just as cleanly as the classics. A fast tracker history shows the longest fasts, the average duration and the patterns across weeks. The fasting journal layer lets you note mood, sleep, hunger and energy alongside each fast, so the meal timing experiments you run on yourself are visible later rather than lost to memory. Edge cases are handled with care — accidental early breaks, paused fasts during travel, time-zone shifts and missed start taps all stay editable without lecturing. The app ships in 39 languages with full accessibility, VoiceOver, Dynamic Type and high-contrast support. Your fasting log stays on this device — no account, no cloud upload, no third-party server in the loop. Everything works offline, including notifications, widgets and the timer itself. Whether you are using it as a fasting coach, a fasting journal or simply a quiet fasting schedule that lives in your pocket, it stays calm — a tool for time-restricted eating rather than a streak-shaming game. Unlock with Pro: • Unlimited fasting history (free tier: last 14 days) • All widgets, themes and StandBy layouts • Advanced analytics — weekly averages, longest fasts, patterns • Custom fasting protocols beyond the presets • Data export in CSV and JSON Subscription Pricing & Terms Features require a subscription. Pricing and terms available in-app. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Payment will be charged to your Apple ID account at confirmation of purchase. The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Manage or cancel your subscription and free-trial conversion in Settings > Apple ID after purchase. Any unused portion of the free-trial period will be forfeited when you purchase a subscription.

Screenshots

Zen Fast4 screens
Intermittent Fasting Kit4 screens

Verdict

The call

The clearest difference is in-app purchases: Zen Fast at none against Intermittent Fasting Kit's 3. Zen Fast also leads on ratings volume (4 vs 1) and iOS requirement (11.0 vs 18.5). On price and rating there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Intermittent Fasting Kit sells 3 in-app purchases, starting at $2.99 per 7 days. Zen Fast asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Zen Fast against 5.0 for Intermittent Fasting Kit. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Scorecard4 real differences · 5 level
Zen Fast versus Intermittent Fasting Kit: the parameters behind the verdict, then further details
ParameterZen FastIntermittent Fasting Kit
PriceFreeFree
Rating5.0 (4 ratings)5.0 (1 ratings)
Number of ratings4 — better1
Update frequency—Every 6 weeks
Ads—No
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
Devices—iPhone — better
Requires iOS11.0 — better18.5
Further details — not scored
Size25 MB16 MB
Age rating4+4+
DeveloperCasey McLewinBahattin Duran

In-app purchases

None

Zen Fast

No in-app purchases

3 purchases

Intermittent Fasting Kit

Subscriptions3
  • Pro Weekly3 Days trial$2.997 Days
  • Pro Monthly3 Days trial$6.991 Month
  • Pro Annual7 Days trial$29.991 Year

Questions

Is Zen Fast free?
Zen Fast is free to download, with no in-app purchases.
Is Intermittent Fasting Kit free?
Intermittent Fasting Kit is free to download, with in-app purchases available.
Which has better reviews, Zen Fast or Intermittent Fasting Kit?
Zen Fast and Intermittent Fasting Kit are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

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